This is a Comprehensive Book on Google wave -

Got an interest in Google Wave but have absolutely no idea where to get started? Try out The Complete Guide to Google Wave, a new (free) book written and edited by Lifehacker cohort Gina Trapani.

Google Wave may not be available to everyone just yet, but there’s still a lot to learn about it and not that many places to do that learning. That’s where The Complete Guide to Google Wave steps in.

Wave is a young, complex, and frankly incomplete web application and technology. It’s also an ambitious project that has the potential to change how we work, collaborate, and communicate on the web. That’s why Gina and Adam decided to pour their time and attention into Google Wave and pull it all together into this book.

They’re calling it a book, even though right now its content is only available on the web at completewaveguide.com. It features eight chapters and two appendices, but they’re going to expand the book as Google continues to grow and expand Wave. (In fact, anyone can help us do just that by contributing to the guide.)

If you’d like a more permanent or convenient copy of the book, its first preview edition will be available for purchase as a PDF later this month, and the first edition print version will be available in January of 2010, but the latest version of the book will always be available and free at completewaveguide.com.